#!/usr/bin/env node

const pi = Math.PI;
class Circle {
  constructor(radius) {
        this.#r = radius;
          
  }
  get diameter() {
        return 2 * this.#r;
          
  }
  get circumference() {
        return pi * 2 * this.#r;
          
  }
  get area() {
        return pi * this.#r * this.#r;
          
  }
    #r = 0;
}
module.exports = Circle;
console.log(module);
